Clamp and product handling equipment provided therewith

ABSTRACT

A clamp for seizing and holding and/or manipulating articles or products by means of clamp jaws forming a clamp gap when the clamp is closed. The clamp jaws move away from one another in their open position and towards one another in their closed position in the extension of the clamp gap. There is also disclosed equipment for manipulating products or the like, particularly printed products which arrive in overlapping staggered or fish-scale formation, such equipment being provided with a number of such clamps.

BACKGROUND AND SUMMARY OF THE INVENTION

The present invention relates to a new and improved construction ofclamping claw or clamp for seizing and holding and/or manipulatingdifferent products or articles, hereinafter simply referred to asproducts, by means of clamping jaws which, when the clamp is closed,form a clamp or clamping gap. The invention also is concerned withproduct handling equipment provided with such clamps.

It is a primary object of the present invention to provide an improvedconstruction of a clamp or clamping claw for the handling of products ina safe, reliable and positive manner.

Another and more specific object of the present invention relates to animproved construction of a clamp having a novel coaction of the clampwith the handled product or products, especially printed products so asto afford protective handling and manipulation of such products.

Still a further object of this invention relates to improved equipmentfor the handling of products, such as printed products arriving in afish-scale or overlapping staggered formation, such as newspapers,periodicals and the like, wherein such equipment is provided with aplurality of clamps for the safe, reliable and positive engagement andmanipulation of the printed products.

Now in order to implement these and still further objects of theinvention, which will become more readily apparent as the descriptionproceeds, the invention is concerned with a new and improvedconstruction of a clamp wherein the clamping jaws when assuming theiropen position move away from one another in the extension of theclamping gap and towards one another in their closing position.

During operation of the clamp of this development, the product to beseized is introduced into the opened clamp mouth and the clamp and/orthe product first thereafter is rotated into a position corresponding tothe desired position of the clamping gap or a position of the clampinggap determined by the shape of the product by and/or during the movementof the clamp jaws into their closed position.

By virtue of the previously mentioned constructional and functionalaspects of the clamp of this development, there are realizedadvantageous features which considerably exceed those prevailing withconventional fields of use of prior art clamp constructions.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be better understood and objects other than those setforth above, will become apparent when consideration is given to thefollowing detailed description thereof. Such description makes referenceto the annexed drawings wherein:

FIG. 1 is an exemplary embodiment of a clamp or clamping claw designedaccording to the teachings of the invention, depicted during a firstoperational step for seizing a folded newspaper constituting the handledproduct;

FIGS. 2 and 3 respectively illustrate the clamp of FIG. 1 during both ofthe following operational steps;

FIG. 4 is a cross-sectional view of a modified construction of clamp;

FIG. 5 illustrates the clamp of FIG. 4 in a position where it engagesfor instance a newspaper;

FIGS. 6 to 11 illustrate details of product handling equipment or systemin the form of a transport device and equipped with clamps designedaccording to the invention for manipulating printed products, andwherein:

FIGS. 6 and 7 respectively illustrate a clamp which can be driven bymeans of a transport chain along a rail and depicted transversely andlengthwise of the rail, respectively, and shown partially in sectionalview;

FIG. 8 illustrates a section of the transport device with clampsconstructed according to FIGS. 6 and 7 during an operating stepcorresponding to FIG. 1;

FIG. 9 illustrates the arrangement of FIG. 8 during the followingoperating step or phase;

FIG. 10 illustrates the arrangement of FIG. 8 during the producttransport phase; and

FIG. 11 illustrates the equipment in a manner corresponding to theshowing of FIG. 8, however showing a longer transport section thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings, it is to be understood that themanipulation of products, for example printed products, such asnewspapers, periodicals and the like, which arrive for instance in anoverlapping fish-scale formation, similar to the arrangement of a fannedduck of cards, as is known in the newspaper or publishing art forinstance, until such time as such printed products are shipped, requirescomplicated automated equipment which, among other things, encompassestransport means for the fish-scale arrangement, package sorters, specialconveying devices for the product packages, feeders for the separationof the products of the packages, cross-wise laying devices, stuffingequipment and many other types of accessory hardware. The complexity ofsuch equipment is not in any linear relationship to its output orcapacity, rather necessitates a disproportionate marked increase in theexpenditure of equipment in order to increase such capacity or output.Furthermore, a difficulty which is present resides in the fact thatduring the course of manipulation and handling of such products theso-called pre-production part or phase of the operation must betemporarily stored, namely until there is present the main production.

It has already been proposed to seize the printed products which arrivein overlapping fish-scale formation by means of a clamp or clamping clawand thereafter to individually manipulate such products by means of suchclamp. The practical realization of this proposal was faced with theproblem that the available prior art clamps which, in their basicaspects correspond to conventional constructions, were complicated andaccordingly expensive, voluminous and at the same time also heavy, sothat the end effect in the first instance was not that the printedproducts had to be manipulated, rather the clamps themselves.

In consideration of these shortcomings, the development of thisinvention aims at overcoming the same. In particular, the situation isquite different for the clamp construction depicted in FIGS. 1 to 3 ofthis invention, particularly when the clamp jaws of the clamp movebetween their open position and their closed position to-and-fro in theextension of the clamping or clamp gap. For the complete functionalityof such clamp, there is required, apart from the presence of theclamping jaws, only a suitable connection thereof appropriate for thecontemplated relative movement. With the illustrated exemplaryembodiments, the flat, blade-shaped clamp jaws 1 and 2 are hingedlyconnected with one another by the hinge means, as generally indicated byreference numeral 3, e.g., a pivot shaft defining a pivot axis. Forforming the clamp gap 4, as shown in FIGS. 2 and 4, the clamp jaws 1 and2 are moved towards one another out of their open position depicted inFIG. 1, until they travel past one another and partially mutuallyoverlap, so as to assume their closed position as shown in FIG. 3. Thisclamp closing operation or phase, when, for instance, a newspaper 5 orthe like should be seized, as has been indicated in FIGS. 1 to 3, occursin the following manner: the one side edge, for instance the spine orfolded edge 6 of the newspaper 5, is introduced into the wide openedmouth 8 of the clamp, designated in its entirety by reference character7, and specifically preferably until this newspaper spine 6 bearsagainst a stop 9 formed by the interconnected ends 1a and 2a of theclamp jaws 1 and 2 respectively. Starting from this position, and asbest shown in FIG. 1, the clamp or clamping claw 7 and/or the newspaper5 is turned until the clamp jaws 1 and 2 flatly bear against thenewspaper. 5. Viewed from the side, this further relative position ofthe clamp 7 and the newspaper 5 corresponds to the illustration of FIG.2.

During and/or after the rotation of the clamp 7 or the newspaper 5, theclamp jaws 1 and 2 are brought into their closed position by carryingout what may be termed a scissor-like movement in which in accordancewith their form which tapers towards their free ends 1b and 2brespectively, they partially overlap at location 10 defined byprojections and form the clamp gap 4 (FIG. 3). The spine 6 of thenewspaper 5 is therefore located in a throughpassage or passagewaydesigned in FIG. 3 by reference character 14, and which throughpassageis formed by the recesses or inturned portions 11 and 12 of the clampjaws 1 and 2 respectively. Owing to this construction, the spine orfolded edge 6 of the newspaper 5 is not damaged by the clamp jaws 1 and2 either during the scissor-like closing of the clamp 7 nor when thelatter assumes its closed position, even though the spine 6, when theclamp is closed, is slightly bent or crimped at the region of thethrough-passage 14. The newspaper 5 and the clamp 7 are nowforce-lockingly or frictionally connected with one another to an extentwhich is sufficient for effectively carrying out each manipulation, thisfrictional connection primarily occuring at the overlapping region 10 ofthe clamp jaws 1 and 2, that is at the region of the clamp gap 4, andwhich furthermore is intensified owing to the flat flush bearing of theclamp jaws against the thus handled product 5.

Owing to the position of the undamaged spine or folded edge 6 in thethroughpassage 14, that is to say "behind" the clamp gap 4, there isproduced with regard to the force-locking or frictional connection aso-called silent reserve. If it were desired to pull apart the newpaper5 and the clamp 7, then indeed owing to this contemplated constructionand coaction, the spine 6 upon entering the clamp gap 4 would affordconsiderable resistance. The slight flexing or bending of the spine 6 atthe region of the throughpassage 14 acts in a similar way if there isconsidered a lateral relative movement between the newspaper 5 and theclamp 7. In other words: once the closed clamp 7 has been placed uponthe newspaper 5, then the clamp and newspaper are frictionally orforce-lockingly interconnected, even if releasably, in such a positivemanner that the same is sufficient for each manipulation of suchproduct. For the manipulation of the newspaper 5 with the clamp 7, thelatter possesses a substantially T-shaped holding or support portion 13which, in the embodiment under consideration, is formed of one piecewith the clamp jaw 2. With the embodiment according to FIGS. 1 to 3, theholding portion 13 is located with respect to the newspaper 5 in aninclined position when the clamp 7 has been brought into engagement withthe newspaper. It should be understood that the clamp 7 itself,different from the position depicted in FIG. 3, could be mounted orapplied at an inclination to the newspaper 5, i.e., turned in thecounterclockwise direction, in order to somewhat align the holdingportion 13 towards the shorter center line of the newspaper 5. However,as shown in FIG. 5, the clamp 7 can be constructed such that the holdingportion 13, and also the clamp 7, can be aligned towards the shortercenter line of the newspaper when the clamp is placed upon suchnewspaper.

The beam 15 of the substantially T-shaped holding portion or support 13,in the case under consideration, is constructed at both of its endsection cylindrically or otherwise such that the holding portion 13 canbe guided for instance in a hollow guide rail of, for instance,substantially C-shaped cross-sectional configuration. Joining togetherof the clamp 7 and the newspaper 5 can occur at the first opportunityafforded to do so in such a way that already at the region of thefish-scale formation of products which arrive from the rotary printingmachine a clamp is applied to each of the thereat present newspapers.For this purpose, the products which are for instance in fish-scaleoverlapping formation could be guided over an arch or dome at the regionof which they open in fan-like manner, the spine of the newspapers thenbeing freely exposed or presented to the clamp. At the region of sucharch or dome the clamps could be delivered out of a magazine, along apath or track which converges with the path or track of the fish-scaleproduct stream, the clamps with their wide open clamp mouth penetratinginto the path of travel of the newspapers and being overtaken by suchnewspapers. In this way the spine of each newspaper arrives at the mouthof the associated clamp which then can be closed in the alreadydescribed manner. The entire procedure occurs of course withuninterrupted further movement of the fish-scale product stream, thisalso being the case with respect to the rotation and closing of theclamp. The clamp closing operation can be brought about through theapplication of an external force K (FIG. 5) which can engage withclosing cams or dogs 16 of the clamp jaws 1 and 2 defining clamp arms.Such forces can be generated for instance owing to rotation of the clampat the region of guide tracks or ramps, yet they can also be generatedby special appropriately arranged actuation devices. Further, it wouldbe possible to equip both clamp jaws with a holding portion and to applythe closing force (also however the opening force) thereto, for instanceby means of the guide rail.

A fish-scale overlapping product stream equipped in this manner withclamps so-to-speak consists of individualized, single manipulatablenewspapers. This does not, however, preclude manipulating the newspapers-- at least temporarily -- in an assembly or group. If it is supposedthat the fish-scale overlapping product stream is equipped with suchclamps or clamping claws, and the holding portions are guided in a railextending in the flow direction of the fish-scale product stream or arearranged at a chain, possibly detachably if desired, then it isconceivable to transform the fish-scale overlapping product streamdirectly into a stack-like formation in which the newspapers, afterthere has been removed therefrom the support carrying the fish-scaleproduct stream, hang down from the rail. They now can be furthertransported in this formation-- which can be considered as a type ofreposed or hanging stack -- along the rail or at the same time togetherat least with sections thereof. It is in fact conceivable to provide aflexible rail, if desired, an endless revolving rail, which moves in itslengthwise direction, at which the clamps are displaceably guided --this in particular in consideration of bringing such together with thenewspapers -- which however simultaneously functions as the entrainmentmeans for the clamps. It is however, also possible to contemplate theprovision of rail sections which, as soon as they are filled with acorresponding number of clamps, move to one side and leave in theirplace an empty space for rail sections which are still to be filled. Thefilled rail sections can be directly further manipulated or howeverdelivered to an intermediate storage. It should be understood that assoon as the fish-scale overlapping product formation is transformed intothe form of a stack which hangs down from the rail or a rail section,there is then possible a compaction operation, that is to say, a pushingtogether of the clamps. In any event, it is clear that after providingthe fish-scale product formation with the clamps, it is possible toundertake the transformation of the products into stack form without anyadditional automated equipment. The possibility of equipping thefish-scale overlapping product formation with clamps -- as should beclearly apparent from what has been discussed -- is rendered possibledue to the particular construction and functional characteristics of thepreviously described clamp which, mentioning only one aspect, possessesa large mouth opening 8, is self-clamping and self-holding and inrelation to the thickness of the non-clamped newspapers is practicallyof no significance, and accordingly can find space both in thefish-scale product formation as well as (with constant spacerequirements) in a stack and which furthermore possess such a low weightthat such -- if this is necessary -- can be itself supported and held bythe newspapers themselves.

The transformation of the fish-scale overlapping product formation intothe form of a reposed or lying stack -- as this expression is to beunderstood -- is reversible. Indeed, such a stack and the newspaperswhich are located therein and which hang down from the rail can be laidout in a fish-scale formation on a support surface, specifically both inthe original fish-scale form as well as also in the form of a reversedfish-scale formation. On the other hand, it is possible to break-up thelying stack, for instance into counted-out packages or into individualnewspapers. The packages can be readily delivered, for instance, to abinding machine or to a shipping station. The dissolution of a reposedstack into individual product copies would be, for instance, ofimportance in conjunction with the stuffing thereof or groupingtogether, that is to say, for the situation where from the copiesresulting from the pre-production together with those from the mainproduction, i.e., from a number of partial products the same are to begrouped together into newspapers, books and the like. Since also thesecopies emanating from the main production in each case hang at a clamp,they can be easily opened for stuffing purposes. For the breaking-up ordissolution of a lying stack into packages or individual copies, in anycase for moving the clamps or the newspapers in groups or individually,there could be provided entrainment means of any type which engage withthe clamps and/or with their holding components or parts. Theentrainment means can be driven or operated mechanically, hydraulically,pneumatically or electrically. It is for instance readily possible todrive the clamps, at least through certain sections or paths, in themanner of a linear motor.

At the appropriate time the clamps are opened, i.e. released from thenewspapers by simply initially moving the clamp jaws in a scissor-likemanner away from one another and finally into their open position, andthese clamps, either before or after possibly placing said in amagazine, are returned to that location at which they are again broughtinto use. Opening of the clamps can occur for instance in such a manneragain that appropriate devices, such as for instance guide tracksarranged at the path of movement of the clamps or movable relativethereto, engage with the appropriately constructed closing cams or dogs16. Furthermore, it is to be appreciated that the hinge means or pivotshaft 3 defines a pivot axis for the clamp jaws 1, 2 which pivot axisextends substantially perpendicular to a plane in which the clamp jawscarry out their previously discussed scissor-like movement.

The described clamps of the construction depicted and discussed inconjunction with FIG. 1 also can engage with newspapers of differentthicknesses within predetermined limits. These limits can be extensivelyenlarged if the clamp jaws possess a certain resilient flexibility orare supported relative to one another with such flexibility. Forinstance, it is possible to design a clamp with an accommodatable oradjustable clamp gap, for instance according to the structure disclosedin FIG. 4. In this case both of the clamp jaws, designated by referencecharacters 21 and 22, and defining clamping arms, are hingedly connectedwith one another by an essentially U-shaped holding portion 23 whichfunctions in the manner of a hairpin spring, the hinge connection beingsuch that the legs 24 of the holding portion 23 with theirbulbous-shaped projections or protuberances 26 engage with aligned holes27 of the clamp jaws 21 and 22 respectively. These clamp jaws 21 and 22thus can appropriately widen the holding portion 23 depending upon thethickness of the newspaper or other product to be seized. At its apex ortop region, the holding portion 23 encompasses a cylindrical transversebeam 25 which is offset at the region of the wrapped around portion andthus secured against displacement in its own lengthwise direction. Withthis embodiment, as well as also with the first described embodiment,the clamp arms can be held in their open position solely due to frictionor however also with the help of engagement members or the like.Corresponding measures in the closed position of the clamp are notnecessary.

Such clamps render possible of course the manipulation of other articlesthan printed products. This is for instance the case for empty or filledpackages, files, books and so forth. It is possible to not only engagewith such clamps flat articles or articles possessing flat-likeportions, but it is also possible to seize articles of all types andshapes. In any event, the clamp is capable of fulfilling its objectiveswith a very small expenditure in relation to the volume and weight ofthe article. In each instance, the articles can be individualized andeasily rendered manipulatable. This circumstance complements thecompletely automatic processing of the articles. In fact, in this regardthe exemplary embodiment described in detail concerning printed productsis most illustrative. The described clamp renders possible thecompletely automated manipulation of, for instance, newspapers orperiodicals, from the rotary printing press up to the time of loadingand shipment.

FIGS. 6-11 inclusive illustrate a possible exemplary embodiment of atransport device for printed products which arrive in the aforementionedfish-scale overlapping formation, such as newspapers and the like. Thistransport device possesses a number of clamp claws or clamps, heredesignated in their entirety by reference character 31 and which clampsare guided by means of travelling springs 32 or equivalent means in arail 33 of substantially U-shaped cross-sectional configuration andwhich opens towards one side, as shown. The travelling springs 32 aremounted at a drive or universal-joint shaft 34 of a link chain 35, alsoreferred to as the transport chain, and which is laterally guided in therail 33 by guide ledges 36. A projection 37 of the universal-joint orhinge shaft 34 extends laterally out of the rail 33 and thus serves forthe articulated anchoring of the associated clamp 31. The projection 37is connected by means of a flange 38 with a bearing or support housing39 in which there is rotatably mounted a shaft 40 carrying the clampjaws or arms 41 and 42. Shaft 40 is fixedly connected with the one clampjaw or arm 42 and hingedly connected at 40a with the other clamp jaw orarm 41. The last-mentioned clamp arm 41 additionally carries anactuation roller or member 43. The shaft 40 piercingly extends through acontrol bushing or sleeve 44 which is axially displaceably mounted inthe housing 39, this control bushing 44 carrying a control roller orroll 45 through the agency of a radial pin 44', as best seen byreferring to FIG. 7. The pin 44' is guided in a slot 46 of the housing39, as shown in FIG. 8, so that the control bushing or sleeve 44 issecured against rotation. For the axial displacement of such controlbushing 44 against the action of a spring 47 (FIG. 6), there areprovided control cams or tracks (rocker arms or equivalent structure)which, as clearly illustrated by reference character 48 in FIG. 7,engage with the control roller or roll 45. The shaft 40 possesses acontrol groove or slot 49 (FIG. 6) which extends partially over theperiphery of such shaft and with which control groove 49 engages aradial pin 50 of the control bushing 44.

Hence, as such should be readily apparent from this disclosure,displacement of the control bushing 44 brings about a correspondingrotation of the shaft 40 which is supported in axial direction. Aftersuch rotation out of the position depicted in FIG. 6 into that depictedin FIG. 7, the actuation roller 43 of the clamp 31 arrives at the regionof the control cams or tracks which, as indicated by referencecharacters 51 and 52 respectively in FIG. 7, bring about thescissor-like closing and opening respectively of the clamp. According tothe showing of FIGS. 6 and 7, the clamp extends downwardly perpendicularto the rail 33 under the action of a spring 53. Under the action of thisspring, the clamp can be folded or shifted with the help of a supportroller 54 when the same travels past ascending portions of theassociated control cams, as for instance indicated by referencecharacter 55 in FIG. 7. As already mentioned and has been illustrated byreference numeral 56 in FIG. 11, the fish-scale product formation 57 isguided by means of the transport belts or bands 58 and 59 over an archedor domed region, so that the leading edges of the newspapers 60 areexposed and accessible to the associated clamps 31. The clamps in turnat this location are guided in a path which converges with that of thefish-scale overlapping product formation 57, so that they arrive in theposition necessary for engaging with the newspapers. For the engagementthereof, the leading edges of the newspapers must penetrate into theopened clamp mouth 8. For producing an appropriate relative speedbetween the newspaper and clamp, the latter -- as shown in FIG. 11 --can be shifted towards the rear with respect to the transport directionwith the aid of the support roller 54. After the newspapers arrive inthe position discussed previously in conjunction with FIG. 1 (see alsoFIG. 8) the clamp jaws or arms 41 and 42 are applied to the newspaperwith the aid of the control roller 45 and brought into their closedposition with the aid of the actuation roller 43, as best seen by alsoreferring to FIG. 9. Consequently, the newspapers 60 are individuallyseized and manipulatable. The transport device now can leave the regionof the conveying band 59. During this transport phase there can bedispensed with the support of the clamps by means of the support rollers54, so that the newspapers depend freely downwardly from the transportchain. By reversing the aforementioned measures it is possible to againform a fish-scale overlapping product formation or arrangement.

The rotation and closing of the clamps can -- as already stated -- occurwith more or less extensive superimposing of such two movements, andspecifically not merely exclusively through a corresponding arrangementof the control cams or tracks associated with the control rollers 54 andthe actuation rollers 43, rather also by virtue of such construction ofclamp mechanism wherein -- again with the help of control grooves andthe like -- the displacement of a single roller brings both a rotationas well as also the closing of each clamp.

While there is shown and described present preferred embodiments of theinvention, it is to be distinctly understood that the invention is notlimited thereto, but may be otherwise variously embodied and practicedwithin the scope of the following claims. Accordingly,

What is claimed is:
 1. A clamp for seizing and holding and/ormanipulating articles, comprising clamp jaws which form a clamp gap whenthe clamp is closed, means for pivotably mounting said clamp jaws, saidclamp jaws being movable in a substantially scissor-like manner at theregion of the clamp gap away from one another into their open positionand towards one another into their closed position, said mounting meansdefining a pivot axis for the clamp jaws which extends substantiallyperpendicular to a plane in which the clamp jaws move in saidscissor-like manner, and means for resiliently connecting said clampjaws with one another in the lengthwise direction of the pivot axis. 2.A clamp for seizing and holding and/or manipulating articles, comprisingclamp jaws which form a clamp gap when the clamp is closed, means forpivotably mounting said clamp jaws, said clamp jaws being movable in asubstantially scissor-like manner at the region of the clamp gap awayfrom one another into their open position and towards one another intotheir closed position, said mounting means defining a pivot axis for theclamp jaws which extends substantially perpendicular to a plane in whichthe clamp jaws move in said scissor-like manner, and a holding memberprovided for the clamp jaws, said holding member comprising a hairpinspring having leg portions, the clamp jaws being hingedly connected withsaid leg portions.
 3. The clamp as defined in claim 2, wherein the clampjaws are arranged between the leg portions of said hairpin spring andare hingedly connected therewith by means of elements whichform-lockingly interengage with one another.
 4. The clamp as defined inclaim 2, wherein the leg portions of the spring possess bulbous-shapedprojections, the clamp jaws having recesses, said bulbous-likeprojections engaging in the recesses of the clamp jaws.
 5. A clamp forseizing and holding and/or manipulating an article, comprising clampjaws having clamping surfaces for engaging the article, means forpivotably mounting said clamp jaws about a pivot axis, said clampingsurfaces forming a clamp gap when the clamp jaws are in their closedposition, said clamping surfaces being substantially perpendicular tosaid pivot axis, said clamp jaws being pivotable in planes substantiallyperpendicular to said pivot axis in a substantially scissor-like manneraway from one another into their open position and toward one anotherinto their closed position, the scissor-like pivoting of said clamp jawsinto their closed position causing gripping engagement of said clampingsurfaces with the article.
 6. The clamp as defined in claim 5, whereinthe clamp jaws define a clamp mouth for receiving the article, saidclamp mouth being bounded toward the inside by stop means for limitingmovement of the article into the clamp mouth.
 7. The clamp as defined inclaim 6 wherein said stop means and said clamp jaws define athroughpassage when said said clamp jaws are in their closed position,said through-passage having a width greater than said clamp gap.
 8. Theclamp as defined in claim 7, wherein the clamp jaws terminate at freeend portions.
 9. The clamp as defined in claim 8, wherein each of theclamp jaws possesses a projection directed towards the other clamp jaw,said projections overlapping one another when the clamp jaws are intheir closed position and forming the clamp gap.
 10. The clamp asdefined in claim 9, wherein the clamp jaws possess a substantially flatconstruction.
 11. The clamp as defined in claim 10, wherein the flatconstruction of the clamp jaws is of a blade-like configuration.
 12. Theclamp as defined in claim 5, wherein said mounting means includes apivot shaft, a holding member engaging with such pivot shaft, said clampjaws being connected with the holding member engaging with the pivotshaft.
 13. The clamp as defined in claim 5, further including a holdingmeans engaging with at least one of the clamp jaws, said clamp jawsbeing connected with said holding means.
 14. The clamp as defined inclaim 5, including a holding member for said clamp jaws, said holdingmember having a substantially T-shaped configuration.